When you pick up a gallon (3. 8 liters) of milk at the store, the nutrients it contains may depend on both what's on the label and the time of year. A new study reports that omega-3 fatty acids are highest in milk labeled as organic grass-fed and lowest in conventionally produced milk.
Source: [Phys.org](https://phys.org/news/2026-07-cows-diets-omega-3s-fatty.html)